Thunderstorms Possible Monday Afternoon.

Portland, Ore. — The National Weather Service says it’s possible the Portland Metro could see thunderstorms Monday afternoon into the evening hours.

Chances for thunderstorms will increase Monday afternoon over much of northwest OR and southwest WA as humidity increases and low pressure moves northwestward towards the area. Any thunderstorms that do develop will most likely produce heavy downpours and frequent lightning. pic.twitter.com/MAqTZtFeKv

— NWS Portland (@NWSPortland) May 15, 2023